Trail Dash or Bully Dog?

I currently have a 2011 Auto Rubicon Unlimited riding on 35's. I am looking into tuners. I do have the flashcal and I know there is an upgrade to the flashpaq, but what I am wanting it increased performance and options of locked in 4wd Hi. I spoken with a rep from Superchips, but didnt really sound confident in his answer. He said it would lock in 4 Hi but only in the front OR in the back, not both. Anyone have any experience with the traildash or the bully dog tuner?

I have the Traildash..works great esp for the lockers. It locks each axle independently of the other so you have full control.